All of the legends surrounding Roman's origins are violent. Why do think the Roman's kept those ideas alive.

I think the Romans kept those ideas alive because they wanted people, like their enemies and any other group or society, to fear them. They want to be the crazy man on the block that you don't mess with. The one who yells "get off my lawn!"

Who would try to invade or fight Rome if they're known as violent maniacs? not me.